Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/ui/gtk/html_dialog_gtk.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/html_dialog_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/tab_contents_container_gtk.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/html_dialog_ui.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 
 using content::WebContents;
+using content::WebUIMessageHandler;
 
 namespace browser {
 
 gfx::NativeWindow ShowHtmlDialog(gfx::NativeWindow parent, Profile* profile,
                                  HtmlDialogUIDelegate* delegate,
                                  DialogStyle style) {
   // It's not always safe to display an html dialog with an off the record
   // profile.  If the last browser with that profile is closed it will go
   // away.
   // Ignore style for now. The style parameter only used in the implementation
@@ skipping 182 matching lines @@
                               dialog_size.height());
 
   gtk_widget_show_all(dialog_);
 
   return GTK_WINDOW(dialog_);
 }
 
 void HtmlDialogGtk::OnResponse(GtkWidget* dialog, int response_id) {
   OnDialogClosed(std::string());
 }